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Rev 2614 Rev 2629
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;;          GNU GENERAL PUBLIC LICENSE                             ;;
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;;          GNU GENERAL PUBLIC LICENSE                             ;;
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;;             Version 2, June- 1991                               ;;
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;;             Version 2, June- 1991                               ;;
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;;                                                                 ;;
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;;                                                                 ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 2614 $
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$Revision: 2629 $
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 20 
 
21 
ARP_NO_ENTRY            = 0
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ARP_NO_ENTRY            = 0
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ARP_VALID_MAPPING       = 1
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ARP_VALID_MAPPING       = 1
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; ARP_input
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; ARP_input
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;
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;
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;  IN:  Pointer to buffer in [esp]
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;  IN:  Pointer to buffer in [esp]
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;       size of buffer in [esp+4]
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;       size of buffer in [esp+4]
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;       packet size (without ethernet header) in ecx
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;       packet size (without ethernet header) in ecx
- 
 
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;       packet ptr in edx
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;  OUT: /
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;  OUT: /
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;
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;
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;-----------------------------------------------------------------
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;-----------------------------------------------------------------
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align 4
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align 4
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ARP_input:
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ARP_input:
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 172 
 
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        cmp     [edx + ARP_header.Opcode], ARP_REP_OPCODE
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        cmp     [edx + ARP_header.Opcode], ARP_REP_OPCODE
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        jne     .maybe_request
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        jne     .maybe_request
- 
 
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        DEBUGF  1,"ARP_input - it's a reply packet from %u.%u.%u.%u\n",\
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        DEBUGF  1,"ARP_input - it's a reply packet from %u.%u.%u.%u\n",\
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        [edx + ARP_header.SenderIP]:1, [edx + ARP_header.SenderIP+1]:1,\
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        [edx + ARP_header.SenderIP]:1, [edx + ARP_header.SenderIP+1]:1, [edx + ARP_header.SenderIP+2]:1, [edx + ARP_header.SenderIP+3]:1
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        [edx + ARP_header.SenderIP+2]:1, [edx + ARP_header.SenderIP+3]:1
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        mov     [esi + ARP_entry.Status], ARP_VALID_MAPPING
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        mov     [esi + ARP_entry.Status], ARP_VALID_MAPPING
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        mov     [esi + ARP_entry.TTL], ARP_ENTRY_TTL
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        mov     [esi + ARP_entry.TTL], ARP_ENTRY_TTL
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        mov     eax, dword [edx + ARP_header.SenderMAC]
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        mov     eax, dword [edx + ARP_header.SenderMAC]
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        mov     dword [esi+ARP_entry.MAC], eax
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        mov     dword [esi+ARP_entry.MAC], eax
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        mov     ax , word [edx + ARP_header.SenderMAC + 4]
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        mov     cx, word [edx + ARP_header.SenderMAC + 4]
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        mov     word [esi+ARP_entry.MAC+4], ax
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        mov     word [esi+ARP_entry.MAC+4], cx
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        DEBUGF  1,"ARP Request packet through device: %u\n", edi
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        DEBUGF  1,"ARP Request packet through device: %u\n", edi
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        inc     [ARP_PACKETS_RX+4*edi]
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        inc     [ARP_PACKETS_RX+4*edi]
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        mov     eax, [IP_LIST+4*edi]
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        mov     eax, [IP_LIST+4*edi]
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        cmp     eax, [edx + ARP_header.TargetIP]                ; Is it looking for my IP address?
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        cmp     eax, [edx + ARP_header.TargetIP]                ; Is it looking for my IP address?
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        jne     .exit                                           ; TODO: instead of quitting, update local entrys with matching IP's ?
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        jne     .exit
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        push    eax
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        push    eax
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        movsd
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        movsd
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        movsw
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        movsw
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        lea     esi, [edx + ARP_header.SenderMAC]
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        lea     esi, [edx + ARP_header.SenderMAC]
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        movsd
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        movsd
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        movsw
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        movsw
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;        mov     ax , ETHER_ARP
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;        mov     ax , ETHER_ARP                                 ; It's already there, I'm sure of it!
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;        stosw
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;        stosw
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        DEBUGF  1,"ARP_input - Sending reply \n"
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        DEBUGF  1,"ARP_input - Sending reply \n"
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        DEBUGF 1,"IP not found on list, preparing for ARP request\n"
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        DEBUGF 1,"IP not found on list, preparing for ARP request\n"
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;--------------------
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;--------------------
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; Send an ARP request
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; Send an ARP request
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- 
 
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        push    eax                     ; save IP for ARP_output_request
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        push    eax
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 499 
; Now create the ARP entry
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        pushw   ARP_REQUEST_TTL
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        pushw   ARP_REQUEST_TTL         ; TTL
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        pushw   ARP_AWAITING_RESPONSE
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        pushw   ARP_AWAITING_RESPONSE   ; status
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        pushd   0
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        pushd   0                       ; mac
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        pushw   0
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        pushw   0
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        pushd   eax
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        pushd   eax                     ; ip
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        mov     esi, esp
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        mov     esi, esp
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        call    ARP_add_entry
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        call    ARP_add_entry
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        add     esp, sizeof.ARP_entry
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        add     esp, sizeof.ARP_entry
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        cmp     eax, -1
 - 
 
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        je      .full
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        cmp     eax, -1
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 - 
 
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        mov     ecx, eax
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        je      .full
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        pop     eax
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        push    ecx
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        call    ARP_output_request
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;; TODO: check if driver could transmit packet
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        pop     esi
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        imul    esi, sizeof.ARP_entry
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        add     esi, ARP_table
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 - 
 
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        mov     ecx, 25
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  .wait_loop:
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        cmp     [esi + ARP_entry.Status], 1
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        je      .got_it
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        push    esi
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        mov     esi, 10
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; And send a request
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        call    delay_ms
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        pop     eax
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        pop     esi
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        call    ARP_output_request      ; IP in eax
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        loop    .wait_loop
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;; TODO: check if driver could transmit packet
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        mov     eax, -2         ; request send
 - 
 
531 
        ret
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        mov     eax, -2                 ; request send
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 518 
        ret
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  .found_it:
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        DEBUGF  1,"found IP in ARPTable\n"
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  .found_it: